知識(shí)貝殼
知識(shí)貝殼
所屬欄目：制革專業(yè)英語
6.1 The Concept of Wet White Process The wet white process was first recommended as long ago as the early 1980’s. Since its initial introduction to the leather industry a number of chemical companies have developed materials for use as wet white pretannin ......（本文共 8620 字 , 4 張圖） [閱讀本文] >>